Drier



, June 1957 G.VW. ISAACS DRIER Filed April 25. 1954 1 l \4 H w INVENTOR 4 GERALD w. ISAACS v/mm United States Patent DRIER Gerald W. Isaacs, East Lansing,

free use of the People in the te States Mich; dedicated to the 'tory of the United I hereby dedicate the invention herein described to the free use of the People in the territory of the United States.

This invention relates to driers especially to a simple and cheap device for convenient use in drying on the farm samples of grains, forage crops, etc., for purpose of moisture determination.

For a detailed description of the invention, reference is made to the accompanying drawing in which:

Figure 1 is an elevation of the drier with parts broken away to illustrate internal structure;

Figure 2 is a section on the line 22 of Figure l; and

Figure 3 is a three-dimensional view of a detail.

In the drawing 11 indicates the upper, open end of a conventional internal combustion engine exhaust pipe to which the drier is attached as by means of a union in the form of a split at one end of pipe 12 for slipping over the end of the exhaust pipe with ears 13 adjacent to split for receiving clamp bolts 14 to secure the drier in place. The upper open end of the pipe opposite the split end is reduced as at 15 and a tube 16 having an end larger than the reduced end of the pipe is fixedly secured to pipe 12 around the reduced end as by means of integral web 17 thus providing a port 18 between the pipe and the tube opening directly to atmosphere. The arrangement is such that hot exhaust gases from the exhaust pipe 12 "ice draw cool air through port 18, mix therewith, and then pass through pipe 16. A greater velocity of exhaust gases draws in more cooling air thus tending to keep the temperature constant with varying engine speeds. This prevents burning or charring of the sample.

A can 25 for holding a sample is detachably mounted in the upper end of pipe 16. The can is provided with a porous bottom such as a screen 26 and a porous cover 27 having a similar screen 28 forming the top.

In use, the sample to be dried -is placed in the can and the engine operated. Hot exhaust gases pass through pipe 12 into tube 16 drawing cooling air through port 18 and the mixed gas and air pass through the porous bottom of the can, the sample, and out of the porous cover.

I claim:

A drier comprising a pipe having means for securing it at one of the ends to the open end of the exhaust pipe of an internal combustion engine so that the exhaust gases pass therethrough, a tube having an end larger than the pipe, means for fixedly securing such larger end of the tube around the end of the pipe opposite the end securing it to the exhaust pipe arranged to provide a port between the pipe and the tube opening directly to atmosphere for admitting cooling air into the tube, whereby hot exhaust gases from the exhaust pipe draw cool air through the port into the tube to mix with the exhaust gases therein, and a can for holding the sample to be dried detachably mounted in the other open end of the tube, said can having a porous bottom and top for passage of the mixed exhaust gases and cooling air therethrough.

References Cited in the file of this patent UNITED STATES PATENTS 2,510,372 Bloxham June 6, 1950 2,531,673 Dexter Nov. 28, 1950 2,532,530 Andersen et a1. Dec. 5, 1950 FOREIGN PATENTS 5,669 Norway Nov. 9, 1896 

